System and method for designing three-dimensional objects

Patent metadata

Field	Value
Publication number	US-9767226-B2
Application number	US-201414316333-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Jun 27, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

According to some aspects, a method of designing an object based on a three-dimensional model representing a shape of the object is provided. The object may be fabricated from a plurality of materials having one or more known physical properties, wherein the object is designed to exhibit one or more target properties. The method may comprise determining a first composition of the object by providing the three-dimensional model as input to a reducer tree, determining one or more physical properties of the object with the first composition by simulating the object with the first composition, comparing the determined one or more physical properties with the one or more target properties, and determining a second composition of the object based on a result of comparing the determined one or more physical properties with the one or more target properties.

First claim

What is claimed is:

1. A computer-implemented method of designing an object based on a three-dimensional model representing a shape of the object, the object to be fabricated from a plurality of materials having one or more known physical properties, wherein the object is designed to exhibit one or more target properties, comprising:
determining a first composition of the object by providing the three-dimensional model as input to a reducer tree, the reducer tree being configured to identify a first plurality of sub-regions of the model each having a size and a shape, and to select a material of the plurality of materials for each of the first plurality of sub-regions;
determining one or more physical properties of the object with the first composition by simulating the object with the first composition;
comparing the determined one or more physical properties with the one or more target properties;
determining, by the reducer tree, a second composition of the object based on a result of comparing the determined one or more physical properties with the one or more target properties by identifying a second plurality of sub-regions of the model and selecting one of the plurality of materials for each of the second plurality of identified sub-regions; and
fabricating the object according to the second composition via one or more additive fabrication techniques.

2. The method of claim 1 , wherein identifying the first plurality of sub-regions of the model and selecting a material of the plurality of materials for each of the first plurality of sub-regions by the reducer tree is based, at least in part, on a plurality of parameters.

3. The method of claim 2 , wherein determining, by the reducer tree, a second composition of the object comprises optimizing one or more of the plurality of parameters based on the result of comparing the determined one or more physical properties with the one or more target properties.

4. The method of claim 1 , wherein the first plurality of sub-regions of the model include a first sub-region having a first size and a first shape, and a second sub-region having a second size, different from the first size, and a second shape, different from the first shape.

5. The method of claim 1 , wherein simulating the object with the first composition comprises a mechanical simulation.

6. The method of claim 1 , wherein simulating the object with the first composition comprises an optical simulation.

7. The method of claim 1 , further comprising determining a metric based on the comparing of the determined one or more physical properties with the one or more target properties.

8. The method of claim 1 , wherein the one or more target properties comprise one or more optical, acoustic and/or mechanical properties.

9. The method of claim 1 , wherein the plurality of materials comprise Acrylonitrile Butadiene Styrene (ABS) and/or a photopolymer.

10. At least one non-transitory computer-readable medium comprising instructions that, when executed, perform a method of designing an object based on a three-dimensional model representing a shape of the object, the object to be fabricated from a plurality of materials having one or more known physical properties, wherein the object is designed to exhibit one or more target properties, the method comprising:
determining a first composition of the object by providing the three-dimensional model as input to a reducer tree, the reducer tree being configured to identify a first plurality of sub-regions of the model each having a size and a shape, and to select a material of the plurality of materials for each of the first plurality of sub-regions;
determining one or more physical properties of the object with the first composition by simulating the object with the first composition;
comparing the determined one or more physical properties with the one or more target properties;
determining, by the reducer tree, a second composition of the object based on a result of comparing the determined one or more physical properties with the one or more target properties by identifying a second plurality of sub-regions of the model and selecting one of the plurality of materials for each of the second plurality of identified sub-regions; and
providing instructions to an additive fabrication device to cause the additive fabrication device to fabricate the object according to the second composition.

11. The at least one non-transitory computer-readable medium of claim 10 , wherein identifying the first plurality of sub-regions of the model and selecting a material of the plurality of materials for each of the first plurality of sub-regions by the reducer tree is based, at least in part, on a plurality of parameters.

12. The at least one non-transitory computer-readable medium of claim 11 , wherein determining, by the reducer tree, a second composition of the object comprises optimizing one or more of the plurality of parameters based on the result of comparing the determined one or more physical properties with the one or more target properties.

13. The at least one non-transitory computer-readable medium of claim 10 , wherein the first plurality of sub-regions of the model include a first sub-region having a first size and a first shape, and a second sub-region having a second size, different from the first size, and a second shape, different from the first shape.

14. The at least one non-transitory computer-readable medium of claim 10 , wherein simulating the object with the first composition comprises a mechanical simulation.

15. The at least one non-transitory computer-readable medium of claim 10 , wherein simulating the object with the first composition comprises an optical simulation.

16. The at least one non-transitory computer-readable medium of claim 10 , the method further comprising determining a metric based on the comparing of the determined one or more physical properties with the one or more target properties.

17. The at least one non-transitory computer-readable medium of claim 10 , wherein the one or more target properties comprise one or more optical, acoustic and/or mechanical properties.

18. The at least one non-transitory computer-readable medium of claim 10 , wherein the plurality of materials comprise Acrylonitrile Butadiene Styrene (ABS) and/or a photopolymer.

19. A system for designing an object based on a three-dimensional model representing a shape of the object, the object to be fabricated from a plurality of materials having one or more known physical properties, wherein the object is designed to exhibit one or more target properties, the system comprising:
at least one processor configured to:
determine a first composition of the object by providing the three-dimensional model as input to a reducer tree, the reducer tree being configured to identify a first plurality of sub-regions of the model each having a size and a shape, and to select a material of the plurality of materials for each of the first plurality of sub-regions;
determine one or more physical properties of the object with the first composition by simulating the object with the first composition;
compare the determined one or more physical properties with the one or more target properties;
determine, via the reducer tree, a second composition of the object based on a result of comparing the determined one or more physical properties with the one or more target properties by identifying a second plurality of sub-regions of the model and selecting one of the plurality of materials for each of the second plural

Assignees

• Massachusetts Inst Technology

Inventors

• Chen Desai
• Sitthi-Amorn Pitchaya
• Levin David I W
• Didyk Piotr
• Matusik Wojciech

Classifications

• G06T17/00

  Three-dimensional [3D] modelling for computer graphics · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• G06F17/5009

  Physics · mapped topic

• G06F17/50 Primary

  Physics · mapped topic

• G06F30/20 Primary

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title